JP7028999B2 - Lock mechanism for variable gauge wheel set - Google Patents

Description

(Cross reference)
This application cites a Chinese patent application submitted on April 13, 2018, in which the title of the invention is "Lock Mechanism for Variable Gauge Wheel Set" and the application number is 2018103337636, the entire application of which is referred to. Will be incorporated into.

The embodiments of the present disclosure relate to the technical field of changing the gauge of a railroad vehicle, and particularly to a locking mechanism for a variable gauge wheel set.

Cross-border passenger and freight transport has grown rapidly in recent years with the rapid development of global economic integration, but cross-border rail transport is serious due to the different rail gauges in each country. Brings a lot of obstacles. In order to solve the problem that the railroad gauge differs from country to country, which hinders cross-border railroad transportation, a bogie that changes the gauge has been proposed. That is, when a train travels on a railroad of another country, it adapts to the gauge of the railroad of another country by changing the distance between the wheels on its own wheel set.

While changing train spacing, the wheels on the same wheel set move relative to each other. A locking mechanism capable of achieving changes between different gauges of wheels is very important. However, in the structure of a conventional variable gauge train, the lock mechanism is complicated in structure, complicated to operate, and unreliable, and in many cases, it cannot be locked / unlocked normally, which is a limiting factor hindering the development of variable gauge trains. ing.

The embodiments of the present disclosure are intended to solve one of the few technical issues present in the prior art or related arts.

An object of the embodiments of the present disclosure is a lock for a variable gauge wheel set that is simple in structure, convenient to operate, reliably locks and unlocks, and conveniently and reliably changes train gauges. It is to provide a mechanism.

In order to solve the above technical problems, the embodiments of the present disclosure provide a locking mechanism for a variable gauge wheel set. The locking mechanism for the variable gauge wheel set includes an outer sleeve and a lock pin, and bosses extending along the axial direction of the outer sleeve are provided on both opposite sides of the outer side of the outer sleeve, respectively. A plurality of recesses are provided at intervals along the longitudinal direction, and the lock pin is for inserting into the recess, and the plurality of recesses are subjected to the action of an external force so as to change the gauge. You can switch between the grooves.

In the embodiment of the present disclosure, the lock pin includes a pin body, an opening groove is provided on one side of the pin body, the opening groove penetrates along the radial direction of the pin body, and the opening groove is formed. At least one lug extending along the axial direction of the pin body is provided inside, the upper end of the lug is connected to the groove top of the opening groove, and the lower end of the lug and the groove bottom of the opening groove are connected to each other. A notch is provided between them, and the lug is for inserting into the concave groove.

Further, in the opening groove, two parallel lugs extending along the axial direction of the pin body are provided.

In the embodiments of the present disclosure, the distance between two adjacent grooves is equal to half the required conversion gauge, the width of the lugs matches the width of the grooves, and the width of the notch is said. It is more than the thickness of the boss.

In the embodiment of the present disclosure, the bottom surface of the pin body is installed as a guide slope inclined upward on both sides of the central axis thereof.

In the embodiment of the present disclosure, the upper end of the pin body is connected by a return spring.

In the embodiments of the present disclosure, the boss is integrally molded with the outer sleeve and the lug is integrally molded with the opening groove.

In the embodiments of the present disclosure, a wear-resistant coating is provided on the outside of the boss, the groove, and the lock pin, respectively, and a lubricant is applied to the outside of the wear-resistant coating.

In the embodiments of the present disclosure, the locking mechanism further comprises an inner sleeve and a bearing, wherein the inner sleeve, the bearing, and the outer sleeve are sequentially and firmly sewn from the inside to the outside.

In the embodiments of the present disclosure, the bearing comprises an inner ring and an outer ring, the inner ring of the bearing is press-fitted into the outer surface of the inner sleeve, and the outer ring of the bearing is fitted to the inner surface of the outer sleeve. It is fitted in a gap, and stop rings are installed at both ends of the outer sleeve.

In the embodiments of the present disclosure, one end of the inner sleeve extends outward from the outer sleeve to form a wheel connection end.

In the embodiments of the present disclosure, the bearing is a rolling bearing.

Compared with the prior art, the above-mentioned technical proposal of this publication has the following advantages.

The embodiments of the present disclosure provide a locking mechanism for a variable gauge wheel set, the locking mechanism for a variable gauge wheel set comprising an outer sleeve and a lock pin, on opposite sides of the outer sleeve, respectively. A boss extending along the axial direction of the outer sleeve is provided, a plurality of concave grooves are provided at intervals along the longitudinal direction of the boss, and the lock pin is for inserting into the concave groove. Therefore, it is possible to switch between the plurality of concave grooves under the action of an external force, and when changing the gauge, the lock pin moves upward under the action of an external force to remove it from the concave groove, and unlocking is realized. At this time, locking is achieved by pushing the wheels of the variable gauge wheel set, moving them outward or inward to the required gauge, and moving the lock pin down and inserting it into the corresponding groove. The change of train gauge is realized. The lock mechanism has a simple structure, can easily and surely change the train gauge, and solves the problem of continuous running of trains on tracks of different gauges.

Further, by providing two parallel lugs extending along the axial direction of the pin body in the opening groove, the situation of receiving force by a single lug is improved, and the reliability of locking and unlocking is improved.

It is a schematic diagram of the locked state of the lock mechanism for the variable gauge wheel set which concerns on embodiment of this disclosure. It is an axial sectional view of FIG. It is a schematic diagram of the unlocked state of the lock mechanism for the variable gauge wheel set which concerns on embodiment of this disclosure. It is sectional drawing in the axial direction of FIG. It is a perspective schematic diagram of the outer sleeve in the lock mechanism for the variable gauge wheel set which concerns on embodiment of this disclosure. It is a perspective schematic diagram of the lock pin in the lock mechanism for the variable gauge wheel set which concerns on embodiment of this disclosure. It is a perspective schematic view after the whole locking mechanism for the variable gauge wheel set which concerns on embodiment of this disclosure is attached.

Hereinafter, specific embodiments of the present disclosure will be described in detail with reference to the drawings and examples. The following examples are for illustration purposes only and are not intended to limit the scope of this publication.

In the description of the embodiments of the present disclosure, "center", "vertical", "horizontal", "top", "bottom", "front", "rear", "left", "right", "vertical" , "Horizontal", "top", "bottom", "inside", "outside", etc., indicate the orientation or positional relationship, which is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is disclosed in the present disclosure. It is merely a convenient or brief description of the implementation and is not an explicit or implied statement that the indicated device or element is always in a particular orientation and is configured and operated in a particular orientation. It should not be understood as a limitation to the embodiments of the present disclosure.

Unless expressly specified and limited in the description of the present invention, the meanings of the terms "attachment", "connecting to each other", and "connecting" should be broadly understood. For example, it can be a fixed connection, a detachable connection, or an integrated connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection to each other via an intermediate medium. It is also possible to connect or communicate inside the two elements. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure depending on the specific circumstances.

In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality", "plurality", and "plurality" mean two or two or more.

As shown in FIG. 1-7, specifically, the locking mechanism for the variable track wheel set according to the embodiment of the present disclosure may include an inner sleeve 4, a bearing 3, an outer sleeve 1, and a lock pin 2. Often, the inner sleeve 4, the bearing 3, and the outer sleeve 1 are tightly sewn in sequence from the inside to the outside to form the whole, and when attached, one end of the inner sleeve 4 is fixedly connected to the wheel 6. In this embodiment, the bearing 3 is a rolling bearing, which easily transmits rotation and plays a role of lateral positioning. Specifically, the bearing 3 includes an inner ring and an outer ring, and the bearing 3 is provided. The inner ring of the inner sleeve 4 is press-fitted and connected to the outer surface of the inner sleeve 4, and in order to secure the structural strength of the inner sleeve 4, the inner sleeve 4 has one end as a support shaft and the other end. May be designed as a tubular structure, the inner ring of the bearing 3 is externally fitted to the support shaft, the tubular end is externally fitted to the axle and connected to the wheel 6, and the outer ring of the bearing 3 is To facilitate attachment / detachment of the outer sleeve 1, a gap is fitted to the inner surface of the outer sleeve 1 so that the outer sleeve 1 and the bearing 3 do not slide relative to each other. The outer sleeve 1, the bearing 3 and the inner sleeve 4 are formed as an overall structure, whereby the inner ring of the inner sleeve 4 and the bearing 3 rotates together with the wheel 6 when the train is operating normally. However, the outer ring of the bearing 3 and the outer sleeve 1 are kept relatively fixed. As shown in FIG. 5, bosses 11 extending along the axial direction of the outer sleeve 1 are provided on both sides of the outer side of the outer sleeve 1 facing each other, and the boss 11 extends horizontally to the outside. A plurality of concave grooves 12 are provided at intervals along the longitudinal direction of the boss 11, and the lock pin 2 is for inserting into the concave groove 12 to realize locking, and is under the action of an external force. Can be switched between a plurality of recesses 12 with, specifically when the train needs to change the track, the lock pin 2 is grooved from bottom to top under the action of a vertical upward external force. Unlocking is realized by removing from 12, and at this time, the wheel 6 is pushed to move outward or inward along the axle direction, and accordingly, the outer sleeve 1, the bearing 3, and the inner sleeve 4 are interlocked and locked as a whole. When moving relative to the pin 2 and the corresponding groove 12 moves beneath the lock pin 2, the lock pin 2 is inserted into the groove 12 under its own gravity and downward acting force, and the wheel 6 The change of the track is completed. Specifically, the distance between the two adjacent grooves 12 is equal to half the gauge of the required change, and when changing the gauge, the wheels 6 at both ends of the axle move simultaneously and the two wheels 6 Each travels by half the required change gauge distance, thus the total travel distance is the required change gauge distance, eg, change from standard gauge to narrow gauge or broad gauge, or narrow gauge or When changing from broad gauge to standard gauge, the changed gauge can be selected as needed. The locking mechanism of the embodiments of the present disclosure has a simple structure, can be conveniently and reliably locked and unlocked, facilitates train gauge changes, and is continuous on different gauge tracks of trains. Solved the driving problem.

As shown in FIG. 7, when operating normally, the locking mechanism is mounted in the outer shaft box 7 of the wheel 6, and the locking mechanism is gap-fitted in the shaft box 7.

In the embodiment of the present disclosure, as shown in FIG. 6, the lock pin 2 includes a pin body 21, the pin body 21 is columnar, and one side of the pin body 21 (one side of the outer peripheral surface) is An opening groove 22 is provided, the opening groove 22 is located in the central portion in the longitudinal direction of the pin main body 21, the diameters at both ends of the pin main body 21 are smaller than the diameter of the central portion, and the upper end of the pin main body 21 is formed by a return spring 5. Connected, one end of the return spring 5 is fitted onto the upper end of the pin body 21 and abuts on the staircase surface between the upper end and the middle, and the other end of the return spring 5 is the support seat above the groove 12. The return spring 5 has a locking force for always maintaining the locked state after the pin body 21 is locked, and when the pin body 21 is locked again after being unlocked, the return spring 5 exerts an opposite acting force on the pin body 21. It is meant to give and help a quick lock. The opening groove 22 penetrates along the radial direction of the pin body 21 so as to facilitate the radial reciprocating (left and right) movement of the pin body 21, and the pin body is contained in the opening groove 22. At least one lug 23 extending along the axial direction of 21 is provided, and in the embodiment of the present disclosure, two parallel lugs 23 along the axial direction of the pin body 21 may be provided, and the two lugs 23 may be provided. The distance between them matches the distance between two adjacent grooves 12, and by providing two lugs 23, a single lug 23 helps improve the situation of receiving force, and the reliability of locking and unlocking The outer surface of the lug 23 is flush with the outer surface of the pin body 21, the upper end of the lug 23 is connected to the groove top of the opening groove 22, and the lower end of the lug 23 and the opening are connected. A notch 24 is provided between the groove 22 and the groove bottom, and the lower end of the lug 23 is inserted into the concave groove 12. When changing the gauge, when the lock pin 2 is removed from the concave groove 12 from the bottom to the top under the action of a vertical upward external force, first, the lug 23 is removed from the concave groove 12 from the bottom to the top, and the concave groove 12 Moving upward, the lower notch 24 of the lug 23 faces the position of the boss 11 between the two recesses 12, and when an external force is applied to the left or right, the outer sleeve 1 is together with the wheel 6. The boss 11 moves, is engaged in the notch 24 and moves along the notch 24, the lower end of the lug 23 is supported by the base surface of the boss 11, and when it moves to the position of another concave groove 12, the pin body 21 moves down under its own gravity and the opposite force of the return spring 5, the lug 23 is inserted into the recess 12 to achieve locking and complete the gauge change.

In the embodiments of the present disclosure, the width of the lug 23 matches the width of the concave groove 12, so that the lug 23 is easily inserted into or removed from the concave groove 12, and the lug 23 is the concave groove 12. After being inserted into, the position of the entire lock mechanism is stable, and it is possible to ensure that shaking is avoided. Since the width of the notch 24 is equal to or larger than the thickness of the boss 11, the boss 11 is notched 24. It can be engaged in and can be slidable in the notch 24.

In the embodiment of the present disclosure, the bottom surface of the pin body 21 is installed as a guide slope 25 inclined upward on both sides of the central axis thereof, and the guide is placed on the ground in order to give an upward acting force to the pin body 21. A guide rail having the same inclination as the slope 25 can be provided, and when the guide slope 25 of the lock pin 2 moves incline upward along the guide rail, an upward acting force is applied to the lock pin 2.

In order to ensure the overall compact structure and reliability of the connection, in the embodiments of the present disclosure, the boss 11 is integrally molded with the outer sleeve 1, and the lug 23 is integrally molded with the opening groove 22. In the disclosed embodiment, the cross section of the outer surface of the outer sleeve 1 is a polygon such as a regular octagon, and the bosses 11 on both sides thereof are provided on the two vertical sides of the regular octagon to realize the optimization of the structure. can do.

In the embodiments of the present disclosure, in order to improve the wear resistance of the structure, wear resistant coatings are provided on the outer sides of the boss 11, the groove 12, and the lock pin 2, respectively, and the frictional force is reduced. In order to enhance the lubricating effect, a lubricant is applied to the outside of the wear-resistant coating.

In the embodiments of the present disclosure, in order to facilitate the connection between the locking mechanism and the wheel, one end of the inner sleeve extends outward from the outer sleeve to form a wheel connection end 41, which is a wheel connection end 41. , Connected to the wheel 6 by fasteners and fastens the locking mechanism to the wheel 6 via the inner sleeve 4.

From the above embodiment, the lock mechanism of the embodiment of the present disclosure has a simple structure, is convenient to operate, and can be reliably locked and unlocked, so that the train gauge can be changed conveniently and reliably. It can be seen that the problem of continuous running on tracks with different gauges of trains has been solved.

The contents described above are merely preferred embodiments of the present disclosure and do not limit the present disclosure. Any changes, equivalent exchanges, improvements, etc. made within the spirit and principles of this disclosure are included in the scope of the protection of this disclosure.

1 Outer sleeve 11 Boss 12 Concave groove 2 Lock pin 21 Pin body 22 Opening groove 23 Rug 24 Notch 25 Guide slope 3 Bearing 4 Inner sleeve 41 Wheel connection end 5 Return spring 6 Wheel 7 Axle box

Claims (11)

An outer sleeve and a lock pin are provided, and bosses extending along the axial direction of the outer sleeve are provided on both opposite sides of the outer side of the outer sleeve, respectively, and a plurality of bosses are spaced along the longitudinal direction of the boss. The concave groove is provided, and the lock pin is for inserting into the concave groove, and can be switched between the plurality of the concave grooves under the action of an external force so as to change the gauge .
The lock pin includes a pin body, an opening groove is provided on one side of the pin body, the opening groove penetrates along the radial direction of the pin body, and the pin body is inside the opening groove. At least one lug extending along the axial direction of the lug is provided, the upper end of the lug is connected to the groove top of the opening groove, and a notch is provided between the lower end of the lug and the groove bottom of the opening groove. , The locking mechanism for a variable gauge wheel set, characterized in that the lug is for insertion into the recess . The locking mechanism for a variable gauge wheel set according to claim 1 , wherein the opening groove is provided with two parallel lugs extending along the axial direction of the pin body. The distance between the two adjacent grooves is equal to half the required conversion gauge, the width of the lugs matches the width of the grooves, and the width of the notch is greater than or equal to the thickness of the boss. The locking mechanism for a variable gauge wheel set according to claim 1 . The lock mechanism for a variable gauge wheel set according to claim 1 , wherein the bottom surface of the pin body is installed as a guide slope inclined upward on both sides of the central axis. The lock mechanism for a variable gauge wheel set according to claim 1 , wherein the upper end of the pin body is connected by a return spring. The locking mechanism for a variable gauge wheel set according to claim 1 , wherein the boss is integrally molded with the outer sleeve, and the lug is integrally molded with the opening groove. The outer side of the boss, the concave groove, and the lock pin are each provided with a wear-resistant coating, and a lubricant is applied to the outside of the wear-resistant coating, according to claim 1-6 . A locking mechanism for the variable gauge wheel set described in either. The variable gauge wheel according to claim 7 , further comprising an inner sleeve and a bearing, wherein the inner sleeve, the bearing, and the outer sleeve are sequentially and firmly sewn from the inside to the outside. Lock mechanism for the set. The bearing comprises an inner ring and an outer ring, the inner ring of the bearing is press-fitted into the outer surface of the inner sleeve, the outer ring of the bearing is gap-fitted into the inner surface of the outer sleeve, and the outer ring is fitted. The lock mechanism for a variable gauge wheel set according to claim 8 , wherein stop rings are installed at both ends of the sleeve. The locking mechanism for a variable gauge wheel set according to claim 8 , wherein one end of the inner sleeve extends outward from the outer sleeve to form a wheel connection end. The locking mechanism for a variable gauge wheel set according to claim 8 , wherein the bearing is a rolling bearing.

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